SyncEventListener


1   package org.sapia.ubik.mcast;
2   
3   
4   /**
5    * Specifies the behavior of listeners of <code>MulticastEvent</code>
6    * instances.
7    *
8    * @author Yanick Duchesne
9    * <dl>
10   * <dt><b>Copyright:</b><dd>Copyright &#169; 2002-2003 <a HREF="http://www.sapia-oss.org">Sapia Open Source Software</a>. All Rights Reserved.</dd></dt>
11   * <dt><b>License:</b><dd>Read the license.txt file of the jar or visit the
12   *        <a HREF="http://www.sapia-oss.org/license.html">license page</a> at the Sapia OSS web site</dd></dt>
13   * </dl>
14   */
15  public interface SyncEventListener {
16    /**
17     * Receives multicast events.
18     *
19     * @param evt a <code>RemoteEvent</code>.
20     * @return an <code>Object</code> consisting of
21     * the synchronous response that is expected from this
22     * intance. This method can return <code>null</code>, if
23     * such can be the case. If an exception must be signaled
24     * to the caller, then it should be returned.
25     */
26    public Object   onSyncEvent(RemoteEvent evt);
27  }
28

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